Unleash Your Health Potential at Cornerstone Clinic!

We provide comprehensive acute, chronic, and preventative care to patients of all ages.

Request An Appointment Today!

Phone: 507-399-2100

Fax: 507-399-2008

Email: [email protected]

We Can Help You!

Rebekah Boer, C-FNP, Nathan Reyelts, PA-C, Samantha Farnum, C-FNP, Lisa Ertman, C-FNP.

Chronic Care

Mold Treatment

DOT Exams

Mycotoxin Testing

IV Therapy

Hormone Therapy

Food Allergies

Mental Health


And More....

A place of healing, peace, and wellness

Family medicine is the cornerstone of healthcare and we pride ourselves in delivering comprehensive, acute, chronic, and preventative care to patients of all ages.  At Cornerstone Clinic, you will form a lifelong compassionate partnership with your provider.  We are thankful for the opportunity to positively impact your health and well-being for decades to come.  

See what others are saying...

We are excited to support the new Cornerstone clinic and look forward to the continued excellent care that has been provided by Nathan Reyelts.

Curt and Val C.

Cornerstone Clinic will be what I want as the gatekeepers of my primary health care. I have faith in Nate Reyelts to provide a comprehensive provider/patient relationship with expert care.

Barbara B.

Sam is an outstanding nurse practitioner to go to. She takes her time to listen to your problems and is easy to talk to. She's incredibly knowledgeable and does a great job explaining things so you feel comfortable with the process. She wonderful with children and getting them to feel at ease throughout the whole appointment. We are so excited to be able to continue seeing Sam at Cornerstone Clinic. We highly recommend her and the team she has built!

Brittany S.

Samantha Farnum has been an absolute life saver for me, literally. I am SO EXCITED for this new clinic. The care she has provided to my family over the last 8+ years has been amazing and I HIGHLY recommend her. If you're tired of being treated as a number and a dollar sign at your current health care provider. She take the time to LISTEN and get you RESULTS and ANSWERS!!!

Shea R.

I don’t have enough praise to give to Sam Farnum of Cornerstone Clinic. She always goes above and beyond to care for myself and my family. She listens to our concerns and helps us make decisions for our health that we feel comfortable with. We have never once doubted her or her expertise both with traditional remedies and alternative remedies. She has been a ‘cornerstone’ for all of our health-related issues for over six years and we are delighted to be able to continue to receive care from her at Cornerstone Clinic.

Kristina N.

Nate has been a wonderful provider for my son and me. He takes time to answer any questions in full and always in a manner that doesn’t get lost in medical terminology. He enters the room with a big smile on his face and makes you feel at ease. He has been a pivotal part of our health care needs for over six years and we are glad to follow him over to Cornerstone Clinic to continue receiving care from him.

Dave N.​

Our family was absolutely THRILLED to hear that Sam and Nate were opening Cornerstone Clinic. The care given by these providers is beyond exceptional. After working with both professionally, and after being seen as a patient by Sam, I can promise you that you will not only feel heard and cared for, but you will never leave their office without feeling hopeful and at peace. These providers fight with you and for you on your path to wellness. They care immensely about your health and well-being. It is evident in every part of their practice. You can trust you are in excellent hands at Cornerstone Clinic.

Sara H.

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